ATmega329A Atmel Corporation, ATmega329A Datasheet - Page 704

• Manufacturer Part Number: ATmega329A
• Manufacturer: Atmel Corporation

Specifications of ATmega329A

• Flash (kbytes): 32 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 54
• Ext Interrupts: 17
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• Segment Lcd: 100
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 2
• Eeprom (bytes): 1024
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

Table of Contents
8284D–AVR–6/11
ATmega169A/PA/329A/PA/3290A/PA/649A/P/6490A/P
1
2
3
4
5
6
7
8
9
Features ..................................................................................................... 1
Pin Configurations ................................................................................... 2
Overview ................................................................................................... 5
Resources ............................................................................................... 11
Data Retention ........................................................................................ 11
About Code Examples ........................................................................... 11
Capacitive touch sensing ...................................................................... 11
AVR CPU Core ........................................................................................ 12
AVR Memories ........................................................................................ 20
System Clock and Clock Options ......................................................... 30
1.1Pinout - 64A (TQFP) and 64M1 (QFN/MLF) ..............................................................2
1.2Pinout - 100A (TQFP) ................................................................................................3
1.3Pinout - 64MC (DRQFN) ...........................................................................................4
2.1Block Diagram ...........................................................................................................5
2.2Comparison Between
2.3Pin Descriptions ........................................................................................................8
7.1Overview .................................................................................................................12
7.2Architectural Overview ............................................................................................12
7.3ALU – Arithmetic Logic Unit ....................................................................................13
7.4AVR Status Register ...............................................................................................13
7.5General Purpose Register File ................................................................................15
7.6Stack Pointer ...........................................................................................................16
7.7Instruction Execution Timing ...................................................................................17
7.8Reset and Interrupt Handling ..................................................................................18
8.1In-System Reprogrammable Flash Program Memory .............................................20
8.2SRAM Data Memory ...............................................................................................21
8.3EEPROM Data Memory ..........................................................................................22
8.4I/O Memory ..............................................................................................................26
8.5General Purpose I/O Registers ...............................................................................26
8.6Register Description ................................................................................................27
9.1Clock Systems and their Distribution .......................................................................30
ATmega169A/169PA/329A/329PA/649A/649P/3290A/3290PA/6490A/6490P 7
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